Bulgaria - List of Champions

On July 31, 1921, the Sofia football league was founded, which
first organised a championship in 1921/22,
won by Slavia (those of 1922/23 and 1923/24
were claimed by Levski); soon afterwards, leagues
were founded in Pleven (North Bulgarian football league, first won
by Ticha), Plovdiv, Kyustendil (South East Bulgarian football league)
and Ruse. (Source: [DHL 06].)